html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed,
figure, figcaption, footer, header,
menu, nav, output, ruby, section, summary,
time, mark, audio, video, input {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font-weight: normal;
    vertical-align: baseline;
}
article, aside, details, figcaption, figure,
footer, header, menu, nav, section {
    display: block;
}
html {
  line-height: 1;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-text-size-adjust: none;
}
body {
  font-family: Helvetica Neue,Tahoma,Arial,PingFangSC-Regular,Hiragino Sans GB,Microsoft Yahei,sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  
  color: #000;
  background: #fff;
}
a {
  background: transparent;
  text-decoration: none;
  -webkit-backface-visibility: hidden;
}
li {
  list-style: none;
}